RT's is short for Retard Tingles, or the sensation one gets after watching something painfully embarrassing and stupid. This type of feeling usually follows incredibly dumb commercials, music videos, embarrassing home movies, or Animal Planet.

RTS is an initialism for Real Trap Sh*t. It is used as a hashtag, #RTS, when describing a track that is significantly more crunk than modern day hip-hop beats. It is also used to make the distinction in separating really good trap tracks from generic and poorly produced trap tracks.

These young money instrumentals aren't cutting it. Time for some #RTS.

Rock Tit's, When a girls nipples are so hard you can see them through her shirt. Often happens in the cold or if a girl has more pokey nipples and doesnt wear a bra. May even happen during erousal of a woman. Many guys get RT's too in cold.